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Question - 50 mL of O2 was collected over water at 25oC and 748mmHg. What is the volume of the gas at STP? (The vapor pressure of water is 23.8mmHg)
Write your solution in appropriate format and provide references
You would like to create a reflection grating like the one shown at the right, with an incident angle (θ) of 43 °. Calculate the number of lines per centimeter that should be etched in the grating for each of the following conditions:
What are some advantages of supercritical CO2 as a mobile phase for chromatographic separations
Calculate a) the amount of ethylene glycol required. b) the amount of by product evolved and c) the amount of polyester produced.
if a open-tube manometer contains a non volatile silicone oil density1.30 gcm3 instead of mercury 13.6 gcm3 what are
Which of the following would be expected to have a bent (angular) shape?
What is the molar concentration of a H3PO3 solution if 150.00 mL of the solution was required to neutralize 75.00 mL of NaOH whose concentration was 1.50 molar?
Question- Write the charge balance and mass balance equations for aqueous solution containing 0.010 M Na2SO4 and 0.0050 M CaCl2.
Consider a solution formed by mixing 30.0 mL of 0.100 M H2SO4, 24.5 mL of 0.100 M HOCl, 25.0 mL of 0.200 M NaOH, 25.0 mL of 0.100 M Ca(OH)2, and 10.0 mL of 0.150 M KOH. Calculate the pH of this solution.
In VSEPR (Valence shell electron pair repulsion) theory, what information about a central atom do you need in order to predict the shape of a molecule
A gas cylinder that contains argon has an internal volume of 6.88 L. A pressure gauge attached to the cylinder reads 1870 psi (1 atm = 14.7psi) at 20.0C.
What are the similarities between distillation and sublimation. When would you choose one over the other.
C and dropped into a calorimeter containing water (specific heat capacity 4.18 J/ g C) initially at 20.2deg C. The final temperature of the water is 33.7 deg C. Caluclate the mass of water in the calorimeter.
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